When the device node (special file) is created, it must sport the exact same major number that is used internally by the kernel.
当设备节点（特殊文件）创建后，它使用的主设备号必须同内核内部使用的完全相同。
In this example, the MyClass node has been identified as a major contributor in the OwnershipContext graph shown in the left panel.
在此示例中，左面板显示的OwnershipContext图表中已将MyClass节点标识为主要占用者。
A major problem in Node precise positioning is the non-line of sight signal transmission.
节点精确定位面临的一个主要问题是信号的非视距传播。
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